dou·ble Dutch
noun/ˌdʌbl ˈdʌtʃ/
/ˌdʌbl ˈdʌtʃ/
[uncountable] (British English, informal)- speech or writing that is impossible to understand, and that seems to have no meaning or make no sense
晦涩的言语（或文字）；莫名其妙的话 - These instructions are written in double Dutch.
这些说明以双荷兰语书写。
- These instructions are written in double Dutch.